Selangor police chief Hussein Omar Khan said the large-scale operation, which involved house-to-house checks and the collection of DNA samples from the residents began yesterday and would continue today.
As of this morning, 5,628 people and 2,484 housing units have already been checked.
There are 18 residential blocks in the area.
“The rainy weather (in the morning) has slowed down the search operation and the handing over of evidence to the police,” he said when contacted by Bernama today.
He said 278 police officers and personnel from various units were involved in the operation.
Checks by Bernama at the apartment today found that police had deployed two sniffer dogs (K9) — Ricks and Gucci — from Bukit Aman and the KLIA police headquarters to check a store and several houses near where Zayn’s body was found.
After being reported missing on Tuesday noon in Damansara Damai, the child was found dead in a stream near his residence the following day, about 200m from his apartment block at Apartment Idaman.
Police seem to have redirected their focus to a storage facility about 50 metres from Block R, Apartment Idaman.
Forensic unit personnel, with the help of K9, inspected the site for almost four hours today.
The store contains motorcycles, plastic chairs and canopies.
The owner of the storage facility, Noraini Ahmad, 51, said it is always kept locked and only opened to take out the motorcycles for her family members.
“About half an hour after the tracker dogs were taken into the store, police informed me that the inspection had been completed and allowed me to lock it.
“But a short while later, they asked me to unlock it again to continue their inspection.”
Meanwhile, Zayn’s grandfather, Zahari Reba, 55, when met at the apartment, denied that the death of his eldest grandson was due to revenge.
Zahari said his son, Zaim Ikhwan, and daughter-in-law Ismanira Abdul Manaf had been staying at the apartment for the past three years.
“Their daily routine is to go to work and come back home. They only know the neighbours living in front (of them). They harbour no grudges against anyone,” he said.